Petefia



(No Model.)

s. WILLIAMS. ART OF MAKING BASES FOR RINGS 0F WATCH GA SE COLUMNS.

N0. 284,.526. "Patented Sept. 4, 1883...

6 d a, g abu ag To all whom, it may concern.-

-. Fig. 3 represents the completed column and its connection wit-ha watch-case and ring,

f making theearsfon these columns out of the .ful Improvement 'in the Construction of Ring- ,Columns for WVatch-Oases; and I hereby declare that the following is a full, clear, and exact. description I of the same, reference being umns or posts projecting from a watch-case,

. a' circularblank and from which the column ing the method for forcing out the metal of 3 In the drawings, A is a tubular column,

the stem-winder 1 is placed.

. accurately inltheir proper place exactly op- MTED: S ATES} PATENTQFFICE 1 SHELDON wrnnriiivrspor rnov'innnon, nnonn ISLAND.

ART OF MAKING BASES FOR Rl srnorrrcrrrron forming 7 Application ti an rn Beit known that I, SHELDON WVILL'IAMs, of the city and county of Providence, and State of Ithode Island, have invented a new and usehad to the accompanying drawings, forming part of this specification. y

This invention has reference to an improved method or process for constructing the coland in which the ring to which thewatchchain is secured is pivoted. p

The inventionconsists in. producing such columns in one piece,without soldering, by

the column by spinning up the end, as .will be more fully set forth, hereinafter.

Figure 1 is a view of a drawn tube with concaved end, such as have been drawn from for watch-cases is to be made. Fig. '2 represents two views of the column after the same has been subjected to the improved process and the ears have been formed on the same.

which are shown in broken lines. Fig. 4= is a'sectional view of the die andplunger, showthepost to form the ears. Fig. 5 is a top view of thedie. Fig. 6 is aview of the column and the compound tool for spinning thehead onto the same.

used as an extensionona watch-case, towhich thering is secured, and in which the shaft of b b are the projections or ears forming the pivotal bearing for the ring. These pieces have heretofore been secured to the column by solder, and it required considerable skill and also labor and time to secure the same posite to eaehother. V

The first part of my invention consists in NGS 0F WATCH-CASE COLUMNS.

26, 18 (No model.) i

solid stock of the same by forcing the metal outward in a proper die, as is shown in Fig. 4, by partially filling the cup-shaped. column with a liquid, a semi-liquid, or a soft metal-*such as water, oil, paraffine, wax, or lead. 4

Referring again to the drawings, 0 is the tube from which thecolumn is to be formed.

D is the die, and d d are the dies forming'the and more mobile than the metal of the tube C. By forcing the plunger E into the tube the metal of the tube is driven in every direction until it meets the dies, by which it is then shaped so as to conform to their surface. The columns shown in Fig. 2 are thus formed, making a stronger column at less cost and without the employment of the skilled labor heretofore required. The column has now to be ornamented by spinning the members or base rings h, i, and k, as shown in Figs. 3 and 6. These have heretofore been produced separately, one at a time; but Ifind that they can be spun by means of the'rollers shown in Fig. 6, held so as to rotate in the holder L, all at the same time that is to say, the conleav'esthe die D that the memberih of the roller will enterthe, form, and, forcing the producing a superior column made in one piec of metal and without joint.

Having thus described my invention, I claim I as new and desireto secure by Letters Patent 1. The improvement in theart of making the base-rings of watch-case columns, which consists in inserting a cup-shaped or tubular blank in suitable die or dies and subjecting it to internal pressure to form the protubervex protuberance g is of such form when it labor heretofore required, at the same time.

part of Letters Patent No. 284,526, dated September 4, 1883, I

ance y, then spinning theprotuberance g to metal outward, will nearly form the member e f 5 ing a cup-shaped 0r tubular blank in suitablethe desired shape by means (if the spinningprotuberance y, then spinning the protubertool L, as described. 4 ance g to the desired shape by means of the 2. The improvement in the art of making spinning-tool L, as described.

Watch-case columns, which consists in insert- SHELDON WILLIAMS.

Witnesses:

H. J. MILLER, JOSEPH A. MILLER.

die or dies and subjecting it to internal press ure t0 forni the ears or ring-bearings and the 

